The only thing that ever helped me was Ativan. but it reminds me of the old adage - its a temporary solution to a permanent problem - I feel like a rose sometimes, except that the petals aren't blossoming, the thorns are growing.....I wish I had an answer for you, but I haven't found it yet - the ativan makes the attacks less intense, but it also makes me not give a sh*&t. I'm not sure it this is really a good thing. Let me know if anything works for you - I'd be willing to give anything a try at this point

Klonopin is what I take everyday. If i skip it i can feel my heart start to pound.You could suggest it to your doc...it is suppose to "aid" in controlling the attacks. What i have found is they do help those ones(attacks) that i get from out of no where, the kind where you are just sitting around picking your nose (haha)and you start getting an attack (most of the time...not all....)(but most is good)
What i have come to find is that the Klonopin really does not do too much for me when i get into situation where i am phobic such as planes, taking medicine ...real stupid things only a person with panic disorder would crap their pants over(and I have felt like more than once i was going to do that)
if i take about 4mg of Ativan I can hop on a plane like nobody's business and look out the windows at 35,000 feet and dont give a rip. That is why i do not take the Ativan for everyday use..i need it when i have a full blown major attack or am going to be put in a position to have one!
U could give the Klonopin a try...some people say it is addicting but i never had a problem with it..took it for a year and went off cold turkey cause i switched doctors(big mistake)for about a year. now i travel an hour to the old doctor so i can get the klonopin and at least feel safe in my own home or out with another person.without it i would never leave the house.
too much rambling....good luck

I was on Efexor for about 4 years and just recently went off of it, about 4 months ago. It worked really well in reducing the amount of attacks I had, but I still had to take xanex on top of it every once in a while. I figured though, that I mostly only had to take Xanex on days where I drank caffeine or was under a lot of stress. I only went off of Efexor because I'm just trying to avoid being on meds right now, otherwise I recomend it. There can be sexual side effects though, where you just aren't as interested... at least that was my major side effect.